/*
 * Copyright (c) 2017-present, CV4J Contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.cv4j.core.datamodel;

/**
 * Line
 *
 * @since 2021-07-22
 */
public class Line {
    /**
     * x1
     */
    public int x1 = 0;
    /**
     * y1
     */
    public int y1 = 0;
    /**
     * x2
     */
    public int x2 = 0;
    /**
     * y2
     */
    public int y2 = 0;

    /**
     * Line
     *
     * @param x1 x1
     * @param y1 y1
     * @param x2 x2
     * @param y2 y2
     */
    public Line(int x1, int y1, int x2, int y2) {
        this.x1 = x1;
        this.y1 = y1;
        this.x2 = x2;
        this.y2 = y2;
    }

    /**
     * Line
     */
    public Line() {
    }

    /**
     * getSlope
     *
     * @return double
     */
    public double getSlope() {
        double dy = y2 - y1;
        double dx = x2 - x1;
        if (dx == 0) {
            return Double.NaN;
        }
        return (dy / dx);
    }

    /**
     * getPoint1
     *
     * @return Point
     */
    public Point getPoint1() {
        return new Point(x1, y1);
    }

    /**
     * getPoint2
     *
     * @return Point
     */
    public Point getPoint2() {
        return new Point(x2, y2);
    }

}
